Anthrapyridone compounds, water-base magenta ink...

Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means

Reexamination Certificate

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C347S095000, C106S031470

Reexamination Certificate

active

06929361

ABSTRACT:
New anthrapyridone compounds represented by the general formula (14):{wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excellent in fastness to light, gas, water and so on.

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patent: 6852154 (2005-02-01), Kitamura et al.
patent: 2004/0174420 (2004-09-01), Kitamura et al.
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patent: 2000-256587 (2000-09-01), None
patent: 99/48981 (1999-09-01), None

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